Founding software engineer @Revolty

Starther; Paris; Sur place; EUR 55 000 - 90 000; Plein temps

Résumé du poste

Revolty is building the future of energy storage, with a fleet of connected batteries monitored and controlled remotely. As a full-stack engineer, you will design the fleet architecture, set multitenant choices, and establish provisioning, OTA, monitoring, and remote diagnostics standards for hundreds of devices in homes.

You’ll develop the software brain of the battery fleet using a modern stack (React/TypeScript frontend, Python/FastAPI backend, PostgreSQL).

Qualifications

• 3+ years of experience shipping software and working with fleets of connected devices.
• Experience provisioning, secure connectivity, OTA, monitoring, and remote debugging in a scaleable architecture.
• Familiarity with access management, encryption, CI/CD, and resilience in distributed systems.

Responsabilités

• Design the fleet architecture with a multitenant model and real-time telemetry considerations.
• Operate the fleet: provisioning, device identity, OTA updates, monitoring, alerts, remote diagnostics.
• Build apps and transform data into actionable decisions across live monitoring, control, and alerts.
• Connect home equipment via protocols (Modbus, MQTT, HTTP) and design a secure API for operators and grid managers.
• Collaborate to scale from POC to first market deployments in 2027.

Connaissances

Full-stack

IoT protocols

Modbus

MQTT

HTTP

CI/CD

Security

Provisioning

Remote debugging

API design

Data modeling

Outils

React

TypeScript

Python

FastAPI

PostgreSQL

TimescaleDB

Vite

Ubuntu

Modbus

MQTT

HTTP

Description du poste

Revolty is the solar battery that has already lived a first life. Revolty gives lithium batteries a second life. They store the solar energy of the 1 million homes already equipped with solar panels. Smaller bills, smaller footprint. Our dream? Make the circular battery the energy heart of every home. Revolty since the beginning : Founded in July 2024, straight out of school by Valentin et Mathilde. €2M of battery orders secured with 15 partner solar installers 3 battery prototypes deployed in real-life conditions 1M€ raised in January 2026 to bring our battery to market First product on sale in 2027!

Meet the Revolteam

We're a small, fast-growing team of six : two cofounders, a business crew, and three hardware engineers led by our CTO, Romain, with 8 years in battery startups and scaleups. Software? Nobody yet - and that's the whole point: you'd be the first, with the entire software side of Revolty left to build.

We're looking for a full-stack engineer

We're looking for a full-stack engineer to build the software brain of our battery fleet. Not one battery: hundreds of them in homes, all to be monitored, updated and piloted remotely. You get carte blanche on the architecture and the big technical choices. Together, we'll go from our live POC to the first units on the market in 2027.

Your missions

Design the fleet architecture. The most structuring decision of the role, and it's yours, with a clean slate to start from: multitenant model, real time (~10 s) vs. telemetry (1 Hz), message broker. Operate the fleet, and set the standards for it. Provisioning, device identity, OTA updates without bricking a battery in someone's basement, plus the monitoring, alerting and remote diagnostics you'll set up from scratch. Build the apps & turn data into decisions, from a blank page. One platform, three views (Revolty, installers, customers): live monitoring, control, alerts, plus the algorithms arbitrating energy flows. Connect everything: home equipment through their own protocols (inverters, EV chargers, heat pumps), and the secure API you'll design so flexibility operators and grid managers can pilot the batteries remotely.

The profile we'd love to meet

You have 3+ years of experience. Enough to have shipped things, broken a few, and learned from both. You've built and run a fleet of connected devices... or you're dying to. Provisioning, secure connectivity, OTA, monitoring, remote debugging, on an architecture you designed to scale: access management, encryption, CI/CD, resilience. You're a full-stack developer: front, back, databases, cloud. Bonus points if IoT protocols speak to you (Modbus, MQTT, HTTP, API...). Bonus: data and product feel. Simulating energy histories, or simply caring about who's on the other side of the screen, a homeowner, an installer. And the hardware behind it.

Our current prototype stack (nothing set in stone...come challenge it!)

Frontend: Vite (React + TypeScript). Backend: Python / FastAPI. Databases: PostgreSQL + TimescaleDB. Cloud: Ubuntu servers. Device protocols: Modbus, MQTT, HTTP...